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From: R. Timothy Edwards (tim AT stravinsky DOT jhuapl.edu)
Date: Thu Oct 26 2000 - 15:57:23 EDT

  • Next message: Jeff W. Sondeen: "Re: Non-manhattan geometry in magic" 

    Dear James,
   Both Philippe Pouliquen and I independently came up with roughly the
same idea to implement (fairly easily, we think) non-manhattan geometry
into magic.  The idea consists of "splitting" one of magic's rectangular
tiles diagonally, with the tile type of each of the two split sections
being determined by the surrounding layers.  DRC for such a case should
require barely more effort than for regular manhattan geometry, and the
resulting magic file should be able to exactly match any non-manhattan
geometry in which the corners of the non-manhattan polygons land on the
lambda grid.  As far as I've noticed, this takes care of over 99% of
the non-manhattan geometery that exists, and the rest can be approximated
much more closely than the current stair-stepping algorithm, perhaps
within the limit of DRC rules.
   But. . . we haven't implemented it yet.  This is a high priority for
me, so if enough people are demanding it, I'll work on it harder.

						Regards,
						Tim

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